JPH01142128U

JPH01142128U -

Info

Publication number: JPH01142128U
Application number: JP3872888U
Authority: JP
Priority date: 1988-03-24
Filing date: 1988-03-24
Publication date: 1989-09-28

Description

[Brief explanation of the drawing]

第１図ないし第５図は本考案の実施例を示す図
面で、第１図は引外し電磁石（電磁石）が無通電
でプランジヤ８が原位置へ復帰されている状態を
示す断面図、第２図は電磁石に通電しプランジヤ
８が磁着位置に磁着されている状態を示す断面図
、第３図と第４図とは第２図のＰ部の拡大図で第
３図はプランジヤ８が磁着する寸前で弾性体Ｏリ
ング１８がフレーム２に当接した状態を示す図、
第４図はプランジヤ８が磁着状態で段付ワツシヤ
２０の側面２０ａがフレーム２に当接した状態を
示す図、第５図は第２図のＱ部の拡大図でプラン
ジヤ８の磁着時にプランジヤ８の接極面１０と固
定磁極１２の接極面１４との間にわずかのすきま
が存在する状態を示す図、第６図ないし第９図は
従来例を示す図面で、第６図は引外し電磁石（電
磁石）が無通電でプランジヤ８が原位置へ復帰さ
れている状態を示す断面図、第７図は電磁石に通
電しプランジヤ８が磁着位置に磁着されている状
態を示す断面図、第８図は第７図のＲ部の拡大図
、第９図は第７図のＳ部の拡大図である。２……フレーム、４……コイル、６……ガイド
管、８……プランジヤ、１０……接極面、１６…
…押し棒、１８……弾性体Ｏリング、２０……段
付ワツシヤ、２８，３８……ばね機構、３６……
ストツパ機構、４０……ばり。 1 to 5 are drawings showing an embodiment of the present invention, in which FIG. 1 is a sectional view showing a state in which the tripping electromagnet (electromagnet) is not energized and the plunger 8 is returned to its original position, and FIG. The figure is a cross-sectional view showing the state in which the electromagnet is energized and the plunger 8 is magnetically attached to the magnetic position. Figures 3 and 4 are enlarged views of the P section in Figure 2, and Figure 3 shows the plunger 8 in the magnetic position. A diagram showing a state in which the elastic O-ring 18 is in contact with the frame 2 just before magnetization,
FIG. 4 is a diagram showing a state in which the side surface 20a of the stepped washer 20 is in contact with the frame 2 when the plunger 8 is magnetically attached, and FIG. 5 is an enlarged view of section Q in FIG. 2 when the plunger 8 is magnetically attached. A diagram showing a state in which a slight gap exists between the armature surface 10 of the plunger 8 and the armature surface 14 of the fixed magnetic pole 12, FIGS. 6 to 9 are diagrams showing conventional examples, and FIG. FIG. 7 is a cross-sectional view showing a state in which the tripping electromagnet (electromagnet) is not energized and the plunger 8 is returned to its original position; FIG. 7 is a cross-sectional view showing a state in which the electromagnet is energized and the plunger 8 is magnetically attached to the magnetic position 8 is an enlarged view of the R section in FIG. 7, and FIG. 9 is an enlarged view of the S section in FIG. 7. 2...Frame, 4...Coil, 6...Guide tube, 8...Plunger, 10...Archive surface, 16...
... Push rod, 18 ... Elastic O-ring, 20 ... Stepped washer, 28, 38 ... Spring mechanism, 36 ...
Stopper mechanism, 40...burr.

Claims

[Scope of utility model registration request]

A frame constituting the mounting part of the electromagnet, a guide tube provided inscribed in a hollow coil inserted and fixed in this frame, and provided movably within the guide tube, one end of which is an polarized surface. a plunger; a push rod that is fixed near the polarized surface of the plunger and protrudes outward from the electromagnet and moves together with the plunger; a spring mechanism that biases the plunger toward its original position; A tripping electromagnet for a circuit breaker, which includes a stopper mechanism provided at the tip of the push rod for controlling the position, and an elastic O-ring provided at the other end of the plunger, in addition to the plunger. The elastic O-ring is shaped like a disk with a hole at its end, and the hole on the side facing the frame has an inner diameter D (D>d) larger than the outer diameter d of the elastic O-ring. Depth T (T
<W) is provided with a stepped washer provided with a concave portion, and the electromagnet is energized so that the magnetically attracted position of the plunger is set between the side surface of the stepped washer facing the frame and the frame. A tripping electromagnet for a circuit breaker, characterized in that it is defined by a contact.